According to the text, why ...
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(§1º) From the earliest time he could remember, William Stoner had his duties. At the age of six he milked the bony cows, slopped the pigs in the sty a few yards from the house, and gathered small eggs from a flock of spindly chickens. And even when he started attending the rural school eight miles from the farm, his day, from before dawn until after dark, was filled with work of one sort or another. At seventeen his shoulders were already beginning to stoop beneath the weight of his occupation.
(§2º) It was a lonely household, of which he was an only child, and it was bound together by the necessity of its toil. In the evenings the three of them sat in the small kitchen lighted by a single kerosene lamp, staring into the yellow flame; often during the hour or so between supper and bed, the only sound that could be heard was the weary movement of a body in a straight chair and the soft creak of a timber giving a little beneath the age of the house.
(§3º) The house was built in a crude square, and the unpainted timbers sagged around the porch and doors. It had with the years taken on the colors of the dry land—gray and brown, streaked with white. On one side of the house was a long parlor, sparsely furnished with straight chairs and a few hewn tables, and a kitchen, where the family spent most of its little time together. On the other side were two bedrooms, each furnished with an iron bedstead enameled white, a single straight chair, and a table, with a lamp and a wash basin on it. The floors were of unpainted plank, unevenly spaced and cracking with age, up through which dust steadily seeped and was swept back each day by Stoner's mother.
Williams, J. (2003). Stoner. New York Review Books. (Original work published 1965).